Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-21-060507-index-headers.html | 2021-02-26 16:25:12 | |
| 0001193125-21-060507-index.html | 2021-02-26 16:25:12 | |
| 0001193125-21-060507.txt | 2021-02-26 16:25:12 | |
 0001193125-21-060507-xbrl.zip | 1325659 | 2021-02-26 16:25:12 |
| cst-20210218.xsd | 69768 | 2021-02-26 16:25:12 |
| cst-20210218_cal.xml | 4747 | 2021-02-26 16:25:12 |
| cst-20210218_def.xml | 2523372 | 2021-02-26 16:25:12 |
| cst-20210218_lab.xml | 289407 | 2021-02-26 16:25:12 |
| cst-20210218_pre.xml | 2078283 | 2021-02-26 16:25:12 |
| d55558d485bpos.htm | 6445899 | 2021-02-26 16:25:12 |
| d55558d485bpos_htm.xml | 917491 | 2021-02-26 16:25:12 |
| d55558dex99di.htm | 57914 | 2021-02-26 16:25:12 |
| d55558dex99dii.htm | 28858 | 2021-02-26 16:25:12 |
| d55558dex99diii.htm | 27248 | 2021-02-26 16:25:12 |
| d55558dex99dv.htm | 41226 | 2021-02-26 16:25:12 |
| d55558dex99dvi.htm | 26664 | 2021-02-26 16:25:12 |
| d55558dex99i.htm | 11251 | 2021-02-26 16:25:12 |
| d55558dex99j.htm | 2261 | 2021-02-26 16:25:12 |
| d55558dex99mii.htm | 8023 | 2021-02-26 16:25:12 |
| d55558dex99miv.htm | 6906 | 2021-02-26 16:25:12 |
| d55558dex99mix.htm | 6909 | 2021-02-26 16:25:12 |
| d55558dex99mvii.htm | 6896 | 2021-02-26 16:25:12 |
| d55558dex99nii.htm | 20441 | 2021-02-26 16:25:12 |
| d55558dex99pi.htm | 512334 | 2021-02-26 16:25:12 |
| d55558dex99pii.htm | 158109 | 2021-02-26 16:25:12 |
| d55558dex99piii.htm | 96517 | 2021-02-26 16:25:12 |
| d55558dex99poa.htm | 5436 | 2021-02-26 16:25:12 |
| FilingSummary.xml | 44108 | 2021-02-26 16:25:12 |
| Financial_Report.xlsx | 341384 | 2021-02-26 16:25:12 |
 g55558g0225082112149.jpg | 2148 | 2021-02-26 16:25:12 |
 g55558g19p10.jpg | 69442 | 2021-02-26 16:25:12 |
 g55558g28t34.jpg | 69633 | 2021-02-26 16:25:12 |
 g55558g44q59.jpg | 106845 | 2021-02-26 16:25:12 |
 g55558g45y19.jpg | 67690 | 2021-02-26 16:25:12 |
 g55558g48y18.jpg | 35885 | 2021-02-26 16:25:12 |
 g55558g51v31.jpg | 71237 | 2021-02-26 16:25:12 |
 g55558g54i38.jpg | 71306 | 2021-02-26 16:25:12 |
 g55558g64j99.jpg | 73038 | 2021-02-26 16:25:12 |
 g55558g76n86.jpg | 68684 | 2021-02-26 16:25:12 |
 g55558g79u49.jpg | 67889 | 2021-02-26 16:25:12 |
 g55558g87k41.jpg | 68281 | 2021-02-26 16:25:12 |
 g55558g88r46.jpg | 69153 | 2021-02-26 16:25:12 |
 g55558g96h48.jpg | 74719 | 2021-02-26 16:25:12 |
| MetaLinks.json | 856744 | 2021-02-26 16:25:12 |
| R1.htm | 18267 | 2021-02-26 16:25:12 |
| R10.htm | 29608 | 2021-02-26 16:25:12 |
| R11.htm | 42680 | 2021-02-26 16:25:12 |
| R12.htm | 28227 | 2021-02-26 16:25:12 |
| R13.htm | 29757 | 2021-02-26 16:25:12 |
| R14.htm | 41993 | 2021-02-26 16:25:12 |
| R15.htm | 262707 | 2021-02-26 16:25:12 |
| R16.htm | 60331 | 2021-02-26 16:25:12 |
| R17.htm | 29604 | 2021-02-26 16:25:12 |
| R18.htm | 29615 | 2021-02-26 16:25:12 |
| R19.htm | 28186 | 2021-02-26 16:25:12 |
| R2.htm | 56054 | 2021-02-26 16:25:12 |
| R20.htm | 29767 | 2021-02-26 16:25:12 |
| R21.htm | 40515 | 2021-02-26 16:25:12 |
| R22.htm | 243756 | 2021-02-26 16:25:12 |
| R23.htm | 58001 | 2021-02-26 16:25:12 |
| R24.htm | 29599 | 2021-02-26 16:25:12 |
| R25.htm | 29610 | 2021-02-26 16:25:12 |
| R26.htm | 28183 | 2021-02-26 16:25:12 |
| R27.htm | 29762 | 2021-02-26 16:25:12 |
| R28.htm | 40569 | 2021-02-26 16:25:12 |
| R29.htm | 238705 | 2021-02-26 16:25:12 |
| R3.htm | 29608 | 2021-02-26 16:25:12 |
| R30.htm | 57999 | 2021-02-26 16:25:12 |
| R31.htm | 29642 | 2021-02-26 16:25:12 |
| R32.htm | 41734 | 2021-02-26 16:25:12 |
| R33.htm | 28185 | 2021-02-26 16:25:12 |
| R34.htm | 29766 | 2021-02-26 16:25:12 |
| R35.htm | 40563 | 2021-02-26 16:25:12 |
| R36.htm | 252349 | 2021-02-26 16:25:12 |
| R37.htm | 66988 | 2021-02-26 16:25:12 |
| R38.htm | 29639 | 2021-02-26 16:25:12 |
| R39.htm | 43427 | 2021-02-26 16:25:12 |
| R4.htm | 42032 | 2021-02-26 16:25:12 |
| R40.htm | 28194 | 2021-02-26 16:25:12 |
| R41.htm | 29763 | 2021-02-26 16:25:12 |
| R42.htm | 45224 | 2021-02-26 16:25:12 |
| R43.htm | 274301 | 2021-02-26 16:25:12 |
| R44.htm | 62101 | 2021-02-26 16:25:12 |
| R45.htm | 29633 | 2021-02-26 16:25:12 |
| R46.htm | 29603 | 2021-02-26 16:25:12 |
| R47.htm | 28184 | 2021-02-26 16:25:12 |
| R48.htm | 29753 | 2021-02-26 16:25:12 |
| R49.htm | 44921 | 2021-02-26 16:25:12 |
| R5.htm | 28198 | 2021-02-26 16:25:12 |
| R50.htm | 249495 | 2021-02-26 16:25:12 |
| R51.htm | 64008 | 2021-02-26 16:25:12 |
| R52.htm | 29635 | 2021-02-26 16:25:12 |
| R53.htm | 42847 | 2021-02-26 16:25:12 |
| R54.htm | 28186 | 2021-02-26 16:25:12 |
| R55.htm | 29757 | 2021-02-26 16:25:12 |
| R56.htm | 35663 | 2021-02-26 16:25:12 |
| R57.htm | 268574 | 2021-02-26 16:25:12 |
| R58.htm | 72194 | 2021-02-26 16:25:12 |
| R59.htm | 29594 | 2021-02-26 16:25:12 |
| R6.htm | 29771 | 2021-02-26 16:25:12 |
| R60.htm | 42062 | 2021-02-26 16:25:12 |
| R61.htm | 28178 | 2021-02-26 16:25:12 |
| R62.htm | 29752 | 2021-02-26 16:25:12 |
| R63.htm | 45448 | 2021-02-26 16:25:12 |
| R64.htm | 273758 | 2021-02-26 16:25:12 |
| R65.htm | 74893 | 2021-02-26 16:25:12 |
| R66.htm | 29641 | 2021-02-26 16:25:12 |
| R67.htm | 42068 | 2021-02-26 16:25:12 |
| R68.htm | 28185 | 2021-02-26 16:25:12 |
| R69.htm | 29757 | 2021-02-26 16:25:12 |
| R7.htm | 40958 | 2021-02-26 16:25:12 |
| R70.htm | 44236 | 2021-02-26 16:25:12 |
| R71.htm | 274835 | 2021-02-26 16:25:12 |
| R72.htm | 75719 | 2021-02-26 16:25:12 |
| R73.htm | 29645 | 2021-02-26 16:25:12 |
| R74.htm | 42072 | 2021-02-26 16:25:12 |
| R75.htm | 28189 | 2021-02-26 16:25:12 |
| R76.htm | 29759 | 2021-02-26 16:25:12 |
| R77.htm | 42058 | 2021-02-26 16:25:12 |
| R78.htm | 274713 | 2021-02-26 16:25:12 |
| R8.htm | 251465 | 2021-02-26 16:25:12 |
| R9.htm | 61481 | 2021-02-26 16:25:12 |
| report.css | 2768 | 2021-02-26 16:25:12 |
| Show.js | 1086 | 2021-02-26 16:25:12 |